#include<stdio.h>
#define SIZE 10
int sump(int * start,int * end);
int main(void)
{
    int marbles[SIZE] = {20,10,5,39,4,16,19,26,31,20};
    long answer;
    answer = sump(marbles,marbles+SIZE);
    printf("The total number of marblles is %ld.\n",answer);
    return 0;
}

int sump(int * start,int * end)
{
    int total = 0;
    while (start < end)
    {
        total += *start;
        start++;
    }
    return total;
}